[INFO] cloning repository https://github.com/jeraldgan/rust-primer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeraldgan/rust-primer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8722a96df067afa7439b1de35ff57b32ad9c3f66
[INFO] documenting jeraldgan/rust-primer against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeraldgan%2Frust-primer" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeraldgan/rust-primer on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeraldgan/rust-primer
[INFO] finished tweaking git repo https://github.com/jeraldgan/rust-primer
[INFO] tweaked toml for git repo https://github.com/jeraldgan/rust-primer written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jeraldgan/rust-primer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 532b0c9d9d1a4c74806be6e501e2cf40323bbaa3f98496f8fb62b47d98b3f120
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "532b0c9d9d1a4c74806be6e501e2cf40323bbaa3f98496f8fb62b47d98b3f120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "532b0c9d9d1a4c74806be6e501e2cf40323bbaa3f98496f8fb62b47d98b3f120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "532b0c9d9d1a4c74806be6e501e2cf40323bbaa3f98496f8fb62b47d98b3f120", kill_on_drop: false }`
[INFO] [stdout] 532b0c9d9d1a4c74806be6e501e2cf40323bbaa3f98496f8fb62b47d98b3f120
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8010fbe8d2d436a8c7d49010fc0c964e0ad763ebae69eddfba36aef0493b90bd
[INFO] running `Command { std: "docker" "start" "-a" "8010fbe8d2d436a8c7d49010fc0c964e0ad763ebae69eddfba36aef0493b90bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]  Documenting exercise-libraries v0.1.0 (/opt/rustwide/workdir/07-external-libraries/exercise)
[INFO] [stderr]  Documenting demo-match v0.1.0 (/opt/rustwide/workdir/05-match-result/demo)
[INFO] [stderr]  Documenting exercise-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/exercise)
[INFO] [stderr]  Documenting demo-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/demo)
[INFO] [stderr]  Documenting structs-exercise v0.1.0 (/opt/rustwide/workdir/02-basics/exercise)
[INFO] [stderr]  Documenting exercise-hello v0.1.0 (/opt/rustwide/workdir/01-hello/exercise)
[INFO] [stderr]  Documenting solution-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/solution)
[INFO] [stderr]  Documenting solution-match v0.1.0 (/opt/rustwide/workdir/05-match-result/solution)
[INFO] [stderr]  Documenting demo-stuff v0.1.0 (/opt/rustwide/workdir/01-hello/demo)
[INFO] [stderr]  Documenting exercise-match v0.1.0 (/opt/rustwide/workdir/05-match-result/exercise)
[INFO] [stderr]  Documenting demo-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/demo)
[INFO] [stdout] error: expected one of `!` or `::`, found `:`
[INFO] [stdout]   --> 07-external-libraries/exercise/src/main.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | https://docs.serde.rs/serde_json/#parsing-json-as-strongly-typed-data-structures
[INFO] [stdout]    |      ^ expected one of `!` or `::`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `exercise-libraries`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name exercise_libraries 07-external-libraries/exercise/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=f336167bef537662 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> 05-match-result/demo/src/main.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 |     };
[INFO] [stdout]   |      ^ help: remove this semicolon
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8010fbe8d2d436a8c7d49010fc0c964e0ad763ebae69eddfba36aef0493b90bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8010fbe8d2d436a8c7d49010fc0c964e0ad763ebae69eddfba36aef0493b90bd", kill_on_drop: false }`
[INFO] [stdout] 8010fbe8d2d436a8c7d49010fc0c964e0ad763ebae69eddfba36aef0493b90bd